31484428 has 24 divisors (see below), whose sum is σ = 56775488. Its totient is φ = 15268176.

The previous prime is 31484417. The next prime is 31484449. The reversal of 31484428 is 82448413.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31484393 and 31484402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27475 + ... + 28597.

Almost surely, 2^31484428 is an apocalyptic number.

It is an amenable number.

31484428 is a deficient number, since it is larger than the sum of its proper divisors (25291060).

31484428 is a wasteful number, since it uses less digits than its factorization.

31484428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333 (or 1331 counting only the distinct ones).

The product of its digits is 24576, while the sum is 34.

The square root of 31484428 is about 5611.0986446506. The cubic root of 31484428 is about 315.7659298490.

The spelling of 31484428 in words is "thirty-one million, four hundred eighty-four thousand, four hundred twenty-eight".